On Thu, Jul 21, 2016 at 02:28:24PM +1000, Tim Wilson-Brown - teor wrote:
Also, old Tor clients won't be able to get updated bridge descriptors from the new authority, but as far as I know, bridge descriptor updates aren't essential for clients to continue to use a bridge.
Yes, correct.
See also https://trac.torproject.org/projects/tor/ticket/19728
--Roger